You can subscribe to a new RSS feed using your web browser using the News Feeds button (this should be undimmed if there is content available) or using some of the many news aggregators/Readers such as Google reader or Newz Crawler. For more information, the BBC website has a good FAQ on news feed descriptions and how to use them.

The LPS SIG feed is available for subscription at: http://www.agi.org.uk/lps/rss.xml